Benjamin



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BENJAMIN, VII'tVI-Gr, F ANEW YORK, N. Y. Letters Patent No. 64,3212, datedl April 30, 1867.

IMPROVED MACHINERY PGR OBTAINING THE BSRAGT OI BARK FOR 'IANNING- AND OTHER PU .P

'tithe Santina rrfunhitu in these-tems ntmt :un mating uut n( the snm.

TO ALL' WHOM IT MAY CONCERN:

Be it known that I, BENJAMIN IItVtNG, of the city, county` and State ot' New York, have invented certain nen and useful improvements in Machinery for Pressing vBark for Obtaining the Extraer thereot` for Tanning and other Purposes; and I do hereby declare that the'following is a full description of the sam@- I vlh'e -natuie of my invention consists, 'rst, in arranging and combining' with three pressu`rc-rollers :rwater haihorf trough, so as to saturate the bark after passing between the impinging surfaces of the upper and first lower roiler, and beforc'b'eing compressed again between the impinging surfaces of the upper and second lower roller, for the purposeot` expelling the cxtractive matter of the bark; second, the combination and arrangement ct'wa water pipe orpipes with the walter bath or trough, for keeping a constant supply of water in it to saturate the bark in passing through the same; third, combining and arranging with the pressure-rollers a collecting trough, .so as to receive all the extract as fast as expelled from the bark in passing between the rollers; fourth, in combining and arranging with the.prossime-rollers an endless.carrying-belt, of porous cloth or wire gauze, and water box, for the purpose'of saturatingV the bark after leaving the first series ot' pressure-rollers, and before being delivered to the next series of -rollers by the carrying-belt; fth, in the combination and nrrrangement of the endless belt and water-box with the two nishing pressure-rollers, for the purpose of expelling the watery extract from the bark; sixth, in combining with thc 4upper pressure-rollersof the two series of rollers a steam pipe or pipes, for the purpose of heating the said upper pressure-rollers, and thereby cause the rcsinous or guunny. constituents'of the bark to combine more readily with the water.

But to describe my invention more particularly I will refer to the aeeompanyingA drawings, forming a part of' this specification, the same letters of reference, whererer they occur, referring tollike pai-ts.

Figur-e1 is a right-handlside view of the machine..

Figure 2 is a left-hand side riw of the same.

Figure Sis a longitudinal eut section of the machine through the line rv fr, iig. 4.

Figure 4 is a plan'riew of the machine.

Letter` Ais the bed, and B and C'thefranie of the machine elevated thereon. In the frame B are arranged, in suitable bearings on the same`le\el,'two metal rollers DI and D?, and about eight inches, more or less, distant from each other. Immediately above the space between the rollers D1 and D2 is arranged, in suitable bearings, a tlrird roller, E, of the saine diameter as the lower rollers, upon the sides of which the roller E is intended to .impinge the bark in passing between them. Underneath v-the roller E, and nearly filling the space between the lower rollers, is a u'ater-trouglnfl1`, having `,a dish-shaped perforated top, G, so as to form-a basin of water, in which the harkis re-soaked after its first compression between the sides of the rollers E and Dl, and also. for the purposeof bending up orguiding the end ot' the slab of bark in between the impinging surfaces ot' the rollers E and D`, to give the second compression to it. 'lo keep up a constant supply of water to the trough a feed pipe, G2, is inserted in the lower part of it, and in its upper part a waste pipe, G3, so that, by ugraduated supply, the trough will be keptA always full. Letters Il are a series ofl cog-wheelsI on the ends of the journals of the rollers E and D and I)'`, of equal size, for thepurpose of giving a uniform speed to all of them. For the purpose of regulating the pressure of the rollers thejournals of the rollers DI and D2 are secured in sliding boxes, which, by means of sct-sorews I, passing through the frame, are adjusted to any amount of pressure required. Letter .I is a collecting trough, arranged upon the bed of the machine, so as to receive the extract as it is expressed from the bark' by the rollers E and D' and D2, to facilitate which operation a suitable space `is allowed between the sides of the trough I" and the rollers :Dl-and D, Letter K a. pipe for taking off the extraet'from the trough J. Letter L is a feed table, by which the slab of bark is introduced into the machine;

and M is ascraper, adjusted at the back of the' roller E "to clear its surface of any gunimy matter that may adhere to it; and N is another, scraper, adjusted at back of the rollerD2 for the twofold purpose of clearing'its surface and carrying the slab of bark to an endless apron, P, made of porous cloth or wire'gauze, running over two carrying-rollersQz propelled or rotated by a belt, R, running on a pulley, S, on the journal l ofthe upper reler U ot' the second series of pressure-rollers U and U2., Letter V is an oblong water-hom'whieh is kept constantly filled with water by a pipe, Y2, inserted into it neer its bottom, and depleted of any cnice-ss by a pipe,

V3, near its upper edge, thereby keeping the bex always full, but prevented from overflowing by the upper pipe. Through this Water-box the upper halt` of theendless apron is carried, 'with the slab of bark thereon, which, by means of a depressing-roller, W, secured upon suitable bearings in the frame of the machine, deprcsses the bark below the surface of the Water in the Water-box, and thus causes it to be re-saturated, so as to dissolve more readily the extractive matter in it before being delivered to the second series of rollers. These rollers are arranged in suitable bearings in the frame C, and geared together by cog-wheels X on their journals, so that,l by means of a pulley, Y, on the opposite end of the upper roller journal, and a chain belt, Z, running,r over a Ipulley, a2, on the outer end of the journal of the roller E of the first series., a uniform speed is given to the several compressing-rollers. Underneath the second series of rollers (U and U2) is a trough, H2, secured to the bed of themachine for collecting the extracty as expelled from the bark by the rollers; and h3 is a pipe for discharging the extract from the trough. Letters M2 are several Scrapers, arranged in the frame of the machine so as to clean the surfaces of the rollers U and U2. Letter N2 is a steam pipe, connecting with the ends ofthe journals ofthe rollers E and U. These journals and rollers are hollen', the' object of which is to allow of their being heated by a constant supply of steam, and thus, by means of pressure and hea-t, more readily disintegrate the fibre of the bark, and, at the same time, cause the Water to absorb the extractive matter more freely than would be possiblelif only cold rollers were used. Letters p2 are waste-Water pipes, attached to the opposite ends of the said rollers journals. Letter r2 is a propelling-shaft, having on its end a small cog-Wheel, s2, which gears into a large cog-Wheel, 12, on the journal of the pressure-roller E, so that, by means of any suitable arrangement of belting applied to the pulleys on the shaft r2, the machine will be set in motion.

Having now described my invention, I will proceed to set forth'what I claim, and desire to secure by Letters Patent of the United States: j

l. I claim the combination and arrangement of the rollers E and Dl and D2 with the trough F, substantially as hereinbefore described and for the purposes set forth. A

2. I claim the combination of the pipes G2 and G3 with' the water-trough F, for the purposes hereinbefore set fort-h.

3. I also claim the combination and arrangement of the rollers E and D and D2 with the water-box F and collecting trough J, for the purposes hereinbefore set forth. v

4. I also claim, in combination with the rollers E, D1, and D2, the endless apron P and water-box V, for the purposes hcreinbefore setv forth.

5. I also claim, in combination with the endless apron I and water-box V, the pressure-rollers U and U, for the purposes hereinbefove set forth.

6. I also claim the combination of the rollers E and U with the steam pipe N2, for the purposes hereinbefore set forth.

BENJAMIN IRVING.

Witnesses:

Taos. W. JHNsoN, C. L. BARRITT. 

